Thermodynamics for Chemical

A/an ____________ system is exemplified by a vessel containing a volatile liquid in contact with its vapor?

Byadmin March 12, 2019August 29, 2021

A/an ____________ system is exemplified by a vessel containing a volatile liquid in contact with its vapor?

A. Isolated
B. Closed
C. Open
D. None of these

Thermodynamics for Chemical

In an ideal refrigeration cycle, the change in internal energy of the fluid is_____________?

In an ideal refrigeration cycle, the change in internal energy of the fluid is_____________?

A. +ve
B. -ve
C. 0
D. Either of the above three; depends on the nature of refrigerant

Read More In an ideal refrigeration cycle, the change in internal energy of the fluid is_____________?
Thermodynamics for Chemical

If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be _____________ Kcal?

If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be _____________ Kcal?

A. -19.4
B. -30.2
C. 55.2
D. -55.2

Read More If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be _____________ Kcal?
Thermodynamics for Chemical

At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is__________________?

At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is__________________?

A. 1.572
B. 1.9398
C. 3.389
D. 4.238

Read More At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is__________________?
Thermodynamics for Chemical

“At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero”. This follows from the __________________?

“At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero”. This follows from the __________________?

A. Third law of thermodynamics
B. Second law of thermodynamics
C. Nernst heat theorem
D. Maxwell’s relations

Read More “At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero”. This follows from the __________________?
Thermodynamics for Chemical

Number of phases in a colloidal system is_____________________?

Number of phases in a colloidal system is_____________________?

A. 1
B. 2
C. 3
D. 4

Read More Number of phases in a colloidal system is_____________________?
Thermodynamics for Chemical

Any substance above its critical temperature exists as _____________________?

Any substance above its critical temperature exists as _____________________?

A. Saturated vapour
B. Solid
C. Gas
D. Liquid

Read More Any substance above its critical temperature exists as _____________________?